Transfer 110111011.001010100 from binary in decimal number system

let\'s translate to decimal like this:

1∙2⁸+1∙2⁷+0∙2⁶+1∙2⁵+1∙2⁴+1∙2³+0∙2²+1∙2¹+1∙2⁰+0∙2^-1+0∙2^-2+1∙2^-3+0∙2^-4+1∙2^-5+0∙2^-6+1∙2^-7+0∙2^-8+0∙2^-9 = 1∙256+1∙128+0∙64+1∙32+1∙16+1∙8+0∙4+1∙2+1∙1+0∙0.5+0∙0.25+1∙0.125+0∙0.0625+1∙0.03125+0∙0.015625+1∙0.0078125+0∙0.00390625+0∙0.001953125 = 256+128+0+32+16+8+0+2+1+0+0+0.125+0+0.03125+0+0.0078125+0+0 = 443.1640625₁₀

got It: 110111011.001010100₂ =443.1640625₁₀